Loom construction, and more particularly a new and useful shed forming mechanism



A. PARTON LOOM CONSTRUCTION, AND MORE PARTICULARLY A NEW AND USEFUL SHED FORMING MECHANISM 3 Sheets-Sheet 1 Jam 21, .1947.

Filed Jan. 25, 1945 A. PARTON 2,414,663 LOOM CONSTRUCTION, AND MORE PARTICULARLY A Jan. 21, 1947.

NEW AND USEFUL SHED FORMING MECHANISM 3 Sheets-Sheet 2 Filed Jan. 25, 1945 NN N \Q. wflw A i=5 fiiii. Ma \N M N A k L M A N o A m 0 Y G B m 0 A o m o 0A A 0 A 0 W o 0 m @Q m M n m k J 1 NM 5 5 A M A N N 9PM. -HHPHN| Jan. .21, 1947; A. PARTON 2,414,563

LOOM CONSTRUCTION, AND MORE PARTICULARLY A .NEW AND USEFUL SHED FORMING MECHANISM Filed Jan. 25, 1945 3 Sheets-Sheet 3 Patented Jan. 21, 1947 LQOM CONSTRUCTION, AND MORE PARTIC-- ULARLY A NEW AND USEFUL SHED FORM- ING MECHANISM Agnes Parton, New York, N. Y. Application January 25, 1945, Serial No. 574.574

This invention is a new and useful 100m construction, and more particularly a new and useful' shed forming mechanism. The invention will be fully understood from the following description read in conjunction with the drawings in which:

Fig. 1 is a longitudinal section through the apparatus of my invention;

The showing in Fig. 2 is the same as that in Fig. 1 exceptthat some of the elements are in a different operative position;

Fig. 3 is a top View (with some parts in section) of the apparatus of my invention; I

Fig. 4 is a detailed side view of a part of the constructionshown in Fig. 1;

V Fig. 5 isa detailed side view of part of the construction shown in Fig. 2;

Fig. 6 is a detailed top view of part of the construction shown in Fig. 3, and Fig. 7 is a detailed perspective view of part of the construction shown in Figs. 1 and 3.

. Referring to Fig. 1, l designates a loom including the bed 2 carried by four supporting legs, of which the remote ones 3 and 4 appear in Figs. 1 and 2. Adjacent one end of the bedis the warp guide 5 and adjacent the other end is the breast or fabric beam 6. The warp threads I are carried onspools 8 supported by the shelf 9 adjacent one-end of the bed and as in usual practice are carried in spaced relationship up over the warp guide 5. a p p Myinvention consists specifically in the shed forming mechanism indicated generally by II. This includes the upstanding flanges l2 and I3 (Figs. 1, 2 and 3) attached to either side of the bed .2 and which support the transverse chan-' nel rails I3 and [4. These rails in turn support the depending lugs l5 and Hi (Figs. 1, 2 and 3) which inturn constitute bearings for the transversely extending shaft l1.

As shown in Fig. 7, this shaft carries rotatively mounted thereon a series of dependent plates, such as l8, I9, and 2!. As shown in Fig. 3 and in greater detail in Fig. 6, one Of these plates is substantially in line with and parallel to one of each of the warp threads. Each of the plates is provided with a slot 22 adjacent the forward end thereof, in which the corresponding warp thread is slipped and through which the warp thread slides as it moves progressively forward; the warp thread rides in this slot throughout the entire weaving operation.

These plates are freely turnable on the shaft 11. By reference to Figs. 3 and 4, it will be noted that the arms 30 and 3| are also carried by the 3 Claims. ((1139-33) shaft l1 and are pinned or otherwise immobilized The outer end of each arm forms a bearing for the shaft 32 which not to be lifted with radial slots while mainder of the plates corresponding to the warps with referenc to shaft [7.

in turn carries the arms 33 and 34 which between them carry the pusher bar 35. The arms 33 and 34 are immobilized with reference to the shaft 32 and each end of shaft 32 is providedwith a toothed wheel such as 36 cooperating with the pawl 31 by which the shaft 32 may be set in any desired position, thereby holding the pusher bar 35 at any desired radial distance from.

the shaft 1'! by which the plates are pivotally carried. The shaft I! may be turned by means of the crank 4i and the lever 42 (Fig. 3) or in,

any other suitable manner to move the pusher bar in the direction indicated by the arrow- 42- in- Fig. 4. Referring again to'Fig. 7, it will be noted that the plates l9 and 2| are provided with radial slots 43 and 44 at a given distance from the shaft [1, whereas the plates l8 and 2E]. are unslotted at the same radial distance. In consequence of this construction, if the push-er bar 35. is moved in the direction indicated by the arrow- 42 while it is set at this radial distance from the shaft H, the plates I 8 and 20 will be moved. to the position shown in solid outline in Fig. 5, thereby lifting the warp thread carried by eachplates l9 and 2!.

such plate, whereas the slotted will not be moved.

In designing or assembling the apparatus,

therefore, the plates corresponding to'those warps which are to be lifted in the first shed-formingparticular selected radial distance from the shaft l1, whereas those operation are unslotted at a which are not to be lifted define radial slots-such as 43 and 44 at this radial distance. The weaver then determines which warps are tc be lifted in the next shed forming operation and by sclect-' ing on these plates a second radial distance from the shaft I? he provides those plates which are therewhich are to be lifted are left unslotted at this radial distance so that when the pusher bar 35 is reset to this radial distance from shaft Ii, it will operate the lift only the desired warp threads. The weaver then determines in the same manner which warp threads are to be lifted in the third operation and selecting a third radial distance from the shaft l!, he provides radial slots at this distance for the plates corresponding to the warp threads which are not to be lifted while leaving unslotted the plates corresponding to the warp threads which are to be lifted to form the shed.

NT OFFICE.

In actual practice, it probably will not be necessaryto actually slot the plates for each succeeding weave but instead to select a plate having the desired arrangement of slots from a bank or reserveof plates, some of which have been slotted in every desired manner. 7 If thenumbercof. desired combinationsiexceeds. that which can-:be: obtained conveniently with the: particular geometric form of plates shown in the drawings, it will be understood that the plates canv beiormed defining a larger segment of a circle, or if desired the segment of-aniArchimedean spi ral so that the slotted portion ofrtheaplateamaybe of any desired length and may also be positioned at a higher level in relation to the warp'threads to avoid any possibility that the warp threads will become caught in the slots when a particular plate is moved.

As in usual practice, the warp threads are held in spaced relationship by a series of wire extending downwardly from' the' beam 52 to the beam 53 (Figs; 1 and 2); As in usualpractice, whenever a shed has been formed, the filling thread is carried into position'withinthe shed by means of a shuttle such as=54- (Fig. 3) and whenever'a-filling thread has been so positioned, the weave may-be compacted and the filling ,thread forced into the final desired position by means of wires 55" suspended between the beams 56' and5l, i. e., by moving-the beam 5'1 in the-direction indicated by arrow'58; As' the weave is formed, the cloth is-w'ound up on the-roller 59so that the point of shed formation is' always held in the same'place withreference to the loom as a whole;

It'will; of course; be understood that for small looms in whichitmi-ght be difficult to incorporatethis forward'movement of" the fabric, the shed-forming mechanism may'be'movedprogressively toward the warp beam i as the weave is formed.

7 While I have shownmy shed forming mechanism-applied to-arelatively simple type of loom; it willbe understoodthat its application isnot so limited andthat it may be applied to any me chanical type of 100m desired In this case, it will i be desirable=-to use several difierent pusher barsinstead of a single-pusher'bar which must be reset to difierent radial distances with referenceto the shaft l1 and to connect eachofthesepusher barsback to'a suitable mechanical control so that the operation of" any particular pusher bar will be integratedwith the operation of the loom as a whole-and l the entire weaving operation will proceed" automatically;

The foregoing description is" by way of illustration and not of limitation; and it is, therefore; my intentiontlfiatthe invention be limited only by-the" appended" claims or'their equivalents, in which I have endeavored to claim broadly all inherent novelty;

I claim:

1. In a loom for weaving textile fabrics including means for holding warp threads in position and means for passing filling threads through the warp threads, shed forming mechanism comprising a series of plates parallel to the warp threads, each of said plates defininga warp-em gaging slotiand each ofjsaid plates: being-mounted fer a movement adapted'to lift the warp-engaging slot, a part (if said plates defining slots and unslotted areas at given positions and the remainderzof'said plates defining slots and unslotted areas at difierentf ositions and a pusher-bar adapted to move the plates defining unslotted areas at a selected position while leaving the remainder unmoved whereby different combinationszcirwarp" threads may be moved into shed forming position by adjustment of said pusherbar.

2. Inaloom for weaving textile fabrics including means for holding warpthreads in position and means for passing filling threads through the warp threads, shed forming mecha nism comprising a series of" p1atespara11elt0 the warp threads and pivotallyxmount'ed for movement about a common transverse axis, each of said plates defining awarp-engaging slot, apart of said plates defining slots and unslotted' areas at given distances from the transverse axis and others of said plates defining slots and unslotted areas at different distances'from' the transverse axisand a pusher-bar adapted to move the plates defining slotted'areas' at a selected distance: from the transverseaxi's' while leaving the remainder unmoved whereby different combinations ofwarp threads may be moveolinto shed forming position by adjustment of the distanceofsaidpusher-bar from said transverse axis.

3. In a loom for weaving textile fabrics in-= cluding meansfor holding warp threads in position and means iorpassingfilling threads through the warp threads, shed forming mechanism comprising a series of plates parallel to the Warp threads and pivotally mounted for movement about a common transverse axis, each of said plates defining a warp-engaging'slot, az-part'of said plates defining radial slots and unslotted" areas at given distances from-the'transverse axis the remainder of said plates defining'radialslots' and unslotted' areas at differentdistances-"fromsaid transverse axis and a pusher-bar adaptedto' move the plates'defining slotted' areasata selected distance from the transverse axis'while leaving the remainder unmoved whereby diflferentoombinations of warp threads may be moved into shed forming-position by adjustment of the distance of said nusher-bar'from said transverse axis.

AGNES PARTON; 1 

